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OK, the other day I had though i heard a noise outside and went out to see my 3 yr old filly being chased by my stallion around my yard. He broke his fence and hers when a weed or something had tripped his electric line and I had just bought this stallion so he was a little rowdy due to his new surroundings anyways. When I came out they were both drenched in sweat like he had been chasing her for some time and tried to stop him but could not. They continued lapping my yard and a field by the house and my filly was kicking him etc. She's in training and is in much better shape then he was and she continued running from him and kicking him for another 20 minutes at least. and I kept trying to catch him with no success. And one of the times as I ran around the house after them I lost sight of them and noticed my barn door had been open and ran down there. When I got there, I heard them in a stall and went in to see her standing pretty close to him in the stall and both were breathing very heavily and dripping in sweat from running. I put a halter and lead on my stud and chased the filly outand closed him in the stall he got upset and tried to come after her but obviously couldn't. ANyhow, sorry for the long editorial, but question is do you think he bred her in that minute I lost sight of them? Or that she would even conceive after being so hot and sweated up. I definately do not want her preg but it troubled me that they were both just standing in the stall.

Hard to say if he bred her or not. Probably not, but it's not worth the risk as the solution is easy. Talk to your veterinarian about getting a shot of prostaglandin to give to her. 2 doses given 14 days apart would be more of a guarantee against unwanted pregnancy if you don't know where she was in her cycle at the time of suspected breeding.

You will be good for quite a while if you are not intending to breed the mare this year (although as you get later, you may need multiple shots).

If you want to breed the mare this year, you should give the last shot no later than 28 days after the estimated ovulation upon which she was bred.

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